SOLUTION: find an equation of the tangent line to the curve at the given point y=x+tanx (pi)(2pi)

Question 993656: find an equation of the tangent line to the curve at the given point y=x+tanx (pi)(2pi)
Answer by htmentor(1343) (Show Source): You can put this solution on YOUR website!
The function y = x + tan(x) does not go through the point (pi,2pi). I assume the given point is supposed to be (pi,pi).
The slope of the tangent line is given by the derivative of the function:
dy/dx = m = 2 + (tan(x))^2
At x = pi, we have m = 2 + (tan(pi))^2 = 2
Use the point-slope form:
y - pi = 2(x-pi) -> y = 2x - pi

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